CN104780882A

CN104780882A - Underpants-type absorbent article

Info

Publication number: CN104780882A
Application number: CN201380059569.9A
Authority: CN
Inventors: 恩田蓝子
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2012-11-22
Filing date: 2013-11-12
Publication date: 2015-07-15
Anticipated expiration: 2033-11-12
Also published as: CN104780882B; JP2014103982A; KR20150060941A; KR101570026B1; JP5614899B2; RU2570498C1; WO2014080795A1; MY180031A

Abstract

This underpants-type absorbent article (1) has a deformation induction region (33c) in which the absorbent core (33) is oriented along the longitudinal direction (Y). An absorbent main body (3), and a ventral exterior body (2A) and dorsal exterior body (2B) are bonded in multiple ventral bonding sections (21a, 21b) which extend along the width direction (X) and are discontinuous in the longitudinal direction (Y). A crotch sheet (6) and a back sheet (32) are bonded in a crotch bonding section (6a) which extends in the longitudinal direction (Y) and is discontinuous in the width direction (X). The length in the longitudinal direction (Y) of the region (SGF) where a bonding region (KSF) and a bonding region (MS) overlap is 50% or less than the length in the longitudinal direction (Y) of the bonding region (KSF). The length in the longitudinal direction (Y) of the region (SGB) where the bonding region (KSB) and the bonding region (MS) overlap is 50% or less than the length in the longitudinal direction (Y) of the bonding region (KSB).

Description

Pants type absorptive article

Technical field

The present invention relates to pants type absorptive article.

Background technology

At present, known a kind of Breeches type disposable diaper, exterior body is divided into the veutro exterior body of the veutro being configured in wearer and is configured in the dorsal part exterior body of dorsal part of wearer, absorbent main body is fixed on veutro exterior body and dorsal part exterior body in the mode of erection, and the edge, the left and right sides of the edge, both sides of the left and right of veutro exterior body and dorsal part exterior body engages (such as with reference to patent documentation 1 and 2).According to this diaper, do not need to remove overlap from the blank of exterior body in the manufacturing process of diaper, maybe can reduce the amount of the overlap that should remove, so economic aspect is favourable, and also also preferred from the viewpoint reducing carrying capacity of environment.

Prior art document

Patent documentation

Patent documentation 1:JP2008-194161A

Patent documentation 2:US2012/302985A1

Summary of the invention

But, in the diaper with described formation, when wearing diaper or because of the action during dress, the health of diaper and wearer rubs mutually, sometimes cause exterior body unintentionally from the situation that absorbent main body is peeled off.Especially pay closely at the thigh root of the wearer of diaper, because of the action of wearer, externally applied forces is easily concentrated, and therefore exterior body is easier sometimes peels off from absorbent main body.Although by improving the engaging force between exterior body and absorbent main body, such stripping can being prevented, because improve engaging force, damaging the flexibility of diaper sometimes, or infringement aeration.

The invention provides a kind of pants type absorptive article, it has ring-type externally mounted part, above-mentioned ring-type externally mounted part comprises: the veutro exterior body being configured in the veutro of wearer, be configured in the dorsal part exterior body of the dorsal part of wearer, the absorbent main body on these exterior bodies is fixed in the mode be erected between this veutro exterior body and this dorsal part exterior body, with the crotch sheet of outer surface side being configured in this absorbent main body, there is in the edge, both sides of the longitudinal direction along this veutro exterior body and this dorsal part exterior body the side seal portion that this veutro exterior body and this dorsal part exterior body are engaged and formed.

Pants type absorptive article has the length direction in the direction extended along absorbent main body and the width orthogonal with it.

Absorbent main body have be positioned at and side that the skin of wearer is nearer positive dough sheet, be positioned at and the back sheet of side that the skin of wearer is far away and the absorbent cores that is positioned between two panels.

Absorbent cores has one or more distortion guidance field alongst.

Being bonded on of veutro exterior body and absorbent main body extends in along width many veutro junction surfaces that length direction exists interval and carries out.

Being bonded on of dorsal part exterior body and absorbent main body extends in along width many dorsal part junction surfaces that length direction exists interval and carries out.

Being bonded on of crotch sheet and back sheet alongst extends in many crotch junction surfaces that width exists interval and carries out.

The engaging zones KS of veutro exterior body and absorbent main body _fthe region SG overlapping with the engaging zones MS of absorbent main body with crotch sheet _fthe length of length direction, be engaging zones KS _flength direction length less than 50%.

The engaging zones KS of dorsal part exterior body and absorbent main body _bthe region SG overlapping with the engaging zones MS of absorbent main body with crotch sheet _bthe length of length direction, be engaging zones KS _blength direction length less than 50%.

Accompanying drawing explanation

Fig. 1 is the axonometric chart of the Breeches type disposable diaper of the embodiment represented as pants type absorptive article of the present invention.

Fig. 2 observes from positive dough sheet side the expansion plane graph making the diaper shown in Fig. 1 extend the state launched.

Fig. 3 is the III-III line profile in Fig. 1.

Fig. 4 (a) is the plane graph of the absorbent cores of the diaper shown in Fig. 2, and Fig. 4 (b) is the b-b line profile in Fig. 4 (a).

Fig. 5 is the plane graph observing the diaper shown in Fig. 2 from back sheet side, is the figure of configuration relation representing veutro and dorsal part exterior body, absorbent main body, crotch sheet.

Fig. 6 is the plane graph of the engagement state representing absorbent main body in the diaper shown in Fig. 2 and crotch sheet.

Fig. 7 is the plane graph of the engagement state representing veutro in the diaper shown in Fig. 2 and dorsal part exterior body and absorbent main body.

Fig. 8 is the plane graph of engagement state representing veutro in the diaper shown in Fig. 2 and dorsal part exterior body, absorbent main body, crotch sheet.

Fig. 9 is the plane graph of configuration relation representing veutro in the diaper shown in Fig. 2 and drosal part end flaps, veutro and dorsal part exterior body and absorbent main body.

Figure 10 is the X-X line profile in Fig. 2.

Figure 11 is the plane graph of engagement state representing veutro in the diaper shown in Fig. 2 and drosal part end flaps, veutro and dorsal part exterior body and absorbent main body.

Detailed description of the invention

Below, based on preferred embodiment also with reference to accompanying drawing, the present invention will be described.The Breeches type disposable diaper 1 (hereinafter also referred to " diaper 1 ") as one embodiment of the present invention is represented in Fig. 1 and Fig. 2.Diaper 1 comprises: be configured at the veutro exterior body 2A of the rectangular lamellar of the veutro of wearer, the dorsal part exterior body 2B being configured at the rectangular lamellar of the dorsal part of wearer and erection at wearing effect and be fixed on absorbent main body 3 on veutro exterior body 2A and dorsal part exterior body 2B.Edge, both sides 2a, 2a of veutro exterior body 2A and edge, both sides 2b, 2b of dorsal part exterior body 2B engage, and form a pair side seal portion 4,4 thus.Consequently, the ring-type externally mounted part 10 be made up of veutro exterior body 2A and dorsal part exterior body 2B is formed.

Diaper 1 under wearing effect as depicted in figs. 1 and 2, the veutro portion A with the veutro being configured in wearer, the drosal part B being configured in the dorsal part of wearer and be configured in the crotch C of the crotch part of wearer between veutro portion A and drosal part B.Diaper length direction be from veutro portion A through crotch C to the direction of drosal part B or its in the other direction (Fig. 2 Y-direction), the direction that this direction and absorbent main body 3 extend is equidirectional.Diaper width direction is the direction in the waist direction along wearer, is direction (in Fig. 2, X-direction) orthogonal to the longitudinal direction.Below, also by diaper length direction referred to as Y-direction, also by diaper width direction referred to as X-direction.

In addition, in the following description, so-called " outer surface (outer surface side) " is the face (face side) when diaper is worn towards the opposition side of the skin side of wearer.So-called " inner surface (inner surface side) " is the face (face side) when diaper is worn towards the skin side of wearer.

As shown in the III-III line profile of Fig. 2 and this figure and Fig. 3, the absorbent main body 3 of diaper 1 has the back sheet 32 of the positive dough sheet 31 of liquid permeability, opaque liquid or water-repellancy and is configured in the absorbent cores 33 of the liquid retentivity between two panels 31,32.Absorbent main body 3 is formed as rectangle longer on length direction Y.Under the wearing effect of diaper 1, positive dough sheet 31 is positioned at the side nearer with the skin of wearer.On the other hand, back sheet 32 is positioned at the side far away with the skin of wearer.

Absorbent main body 3 have from the left and right sides edge of absorbent cores 33 or near it towards the first three-dimensional fold 34 that the central side of width X erects.In addition, absorbent main body 3 have from the left and right sides edge of absorbent cores 33 or edge-on towards the outside of width X near it the second three-dimensional fold 35.First three-dimensional fold 34 and the second three-dimensional fold 35, their base end part 36 is positioned at identical position.Base end part 36 be positioned at as mentioned above the left and right sides edge of absorbent cores 33 or its near.Base end part 36 extends at length direction Y.First three-dimensional fold 34 and the second three-dimensional fold 35 are preferably formed at least crotch C of absorbent main body 3, and cross crotch C and extend to veutro portion A and drosal part B.

First three-dimensional fold 34 has and is positioned at its free end 34a and thread elastomeric element 34b, 34c near it.Thread elastomeric element 34b, 34c all extend at length direction Y.Thread elastomeric element 34b, 34c are fixed on fold formation sheet 37 with elongation state.Same with the first three-dimensional fold 34, the second three-dimensional fold also has and is positioned at its free end 35a and thread elastomeric element 35b, 35c near it.Thread elastomeric element 35b, 35c all extend at length direction Y.Thread elastomeric element 35b, 35c are fixed on fold formation sheet 37 with elongation state.

First three-dimensional fold 34 and the second three-dimensional fold 35 are formed by a fold and are formed with sheet 37.Specifically, fold formation sheet 37 is rectangular that extends at length direction, has the first side edge part 37a and the second side edge part 37b of the left and right extended at length direction.The first side edge part 37a in this rectangular is made to be positioned at base end part 36.And, in the position of distance separating regulation from the first side edge part 37a to width central side, along the first bending line 37c extended at length direction by the doubling of fold formation sheet 37.The position of this first bending line 37c becomes the free end 34a of the first three-dimensional fold 34.Then, the position of the first bending line 37c after doubling and the position near it, configure thread elastomeric element 34b, 34c with elongation state, this thread elastomeric element 34b, 34c engaged and be fixed on overlap between two-layer fold formation sheet 37.In addition, the position corresponding with base end part 36 at the position be folded back by doubling among fold formation sheet 37, is engaged with the first side edge part 37a of this fold formation sheet 37.Thus, the first three-dimensional fold 34 is formed.In addition, making to be positioned among fold formation sheet 37 leans on the position of the second side edge part 37 side to extend to the outside of width X than the position engaged at base end part 36.And, among this position of extending, outside width, separate the position of predetermined distance from base end part 36, along the second bending line 37d extended at length direction Y by the doubling again of fold formation sheet 37.The position of this second bending line 37d becomes the free end 35a of the second three-dimensional fold 35.Then, the position of the second bending line 37d after doubling and the position near it, configure thread elastomeric element 35b, 35c with elongation state, this thread elastomeric element 35b, 35c engaged and be fixed on overlap between two-layer fold formation sheet 37.In addition, the position corresponding with base end part 36 in the position turned back by the doubling at the second bending line 37d among fold formation sheet 37, is engaged with the first side edge part 37a of this fold formation sheet 37.Thus, the second three-dimensional fold 35 is formed.In addition, the lower face side of absorbent cores 33 and the non-opposite face side of skin is configured at being positioned among fold formation sheet 37 than the position at the engaged position of base end part 36 by the second side edge part 37b side.Therefore, be positioned at the position of the second side edge part 37b side among fold formation sheet 37, as shown in Figure 3, between absorbent cores 33 and crotch sheet 6 described later.

As the absorbent cores 33 of absorbent main body 3, such as, can use the slim 33a of mixed product being covered the hydrophilic fibres such as short fiber oar and superabsorbent polymer by the hydrophilic such as cotton paper or hydrophilic non-woven clad sheet 33b and the parts formed.As hydrophilic non-woven, such as, can use the spunbond-melt blown-spunbond non-woven fabrics etc. having carried out hydrophiling.In addition, as the positive dough sheet 31 of absorbent main body 3, back sheet 32 and fold formation sheet 37, be not particularly limited, current the used various materials etc. of the absorbent commodities such as disposable diaper can be used.Such as, as positive dough sheet 31, non-woven fabrics, perforated film etc. that single or multiple lift constructs can be used.As back sheet 32, the duplexer etc. of resin film or resin film and non-woven fabrics can be used.As fold formation sheet 37, hydrophobic non-woven fabrics etc. can be used.

As shown in Fig. 3 and Fig. 4 (a), (b), absorbent cores 33 has many distortion guidance field 33c that alongst Y extends.Distortion guidance field 33c is preferably formed at least crotch C of absorbent main body 3, and crosses crotch C and extend to veutro portion A and drosal part B.Distortion guidance field 33c is the position becoming the flexible axle that absorbent cores 33 is out of shape along this distortion guidance field 33c.In order to this object, as shown in Fig. 4 (a) He (b), can adopt using absorbent cores 33 at the through peristome of its thickness direction as distortion guidance field 33c.In addition, the low grammes per square metre portion that grammes per square metre can be adopted lower than other region in absorbent cores 33 is as distortion guidance field 33c.Or the low thickness portion that other region in Thickness Ratio absorbent cores 33 can be adopted thin is as distortion guidance field 33c.By forming distortion guidance field 33c in absorbent cores 33, the rigidity of this absorbent cores 33 can be reduced, diaper 1 can be made its entirety and there is soft feel.As aftermentioned, by the bond pattern of absorbent main body 3 and crotch sheet 6 being set as extending at alongst Y many bond pattern that width X exists interval, make soft feel more obvious.In addition, in Fig. 3 and Fig. 4 (a), (b), the state being formed with many distortion guidance field 33c is illustrated, but the degree of pliability required by diaper 1, also only can form a distortion guidance field 33c.

As shown in Figure 3, crotch sheet 6 is configured with at the outer surface of the back sheet 32 of absorbent main body 3.As shown in Figure 5, preferred crotch sheet 6 is configured at least crotch C of absorbent main body 3 on length direction Y, and crosses crotch C and extend to veutro portion A and drosal part B.Absorbent main body 3 is configured at the position of veutro portion A and drosal part B and between veutro exterior body 2A and dorsal part exterior body 2B among crotch sheet 6.Therefore, at veutro portion A and drosal part B, crotch sheet 6 is not exposed to the outer surface of diaper 1.Crotch sheet 6 is only exposed to the outer surface of diaper 1 at crotch C.Crotch sheet 6 is to may protect this back sheet 32 and use by the low back sheet 32 of mechanical strength by being coated with.In addition, impression and skin sense of touch in order to improve the outward appearance of diaper 1 use.

Distance between the width of preferred crotch sheet 6 with the free end 35A of the second three-dimensional fold 35 of the left and right described before is identical or narrower than it.By such design, the retractility of the second three-dimensional fold 35 can not be hindered, impression and the skin sense of touch of the outward appearance of diaper 1 can be improved, so preferably.In addition, the width of crotch sheet 6 is preferably identical with the width of absorbent cores 33.Such design, most effect in the outward appearance improving diaper 1 and skin sense of touch.In addition, in the present embodiment, absorbent cores 33 plane is seen as roughly rectangular shape, therefore when alongst Y observes, the width of this absorbent cores 33 is certain, but according to the shape of the absorbent cores 33 different because of situation, when alongst Y observes, its width is different.Under these circumstances, the width of preferred crotch sheet 6 is identical with the Breadth Maximum of absorbent cores 33.

As shown in Figure 3 and Figure 6, about absorbent main body 3 and crotch sheet 6, the back sheet 32 of absorbent main body 3 and crotch sheet 6 extend at alongst Y many crotch junction surface 6a width X existing interval and engage.Each crotch junction surface 6a is such as formed by the coating of bonding agent.Each crotch junction surface 6a is formed as the striated with Rack.But the formation pattern of each crotch junction surface 6a is not limited thereto, and also can be formed by other pattern, as long as alongst Y shape becomes muscle shape.Such as also can adopt the bond pattern of spiral helicine bond pattern, Ω shape.Each crotch junction surface 6a is formed continuously or discontinuously in the whole region of the length direction of crotch sheet 6.Between the crotch junction surface 6a that width X is adjacent, back sheet 32 and crotch sheet 6 are disengaged condition.

Engage back sheet 32 and crotch sheet 6 by the crotch junction surface 6a of the pattern shown in Fig. 3 and Fig. 6, the rigidity of absorbent main body 3 can be reduced, diaper 1 can be made its entirety and there is soft feel.Direction particularly due to crotch junction surface 6a extension is consistent with the direction that the distortion guidance field 33c formed in absorbent cores 33 extends, and can reduce the rigidity of absorbent main body 3 further.

Be positioned at the outermost crotch junction surface 6a of width X among the crotch junction surface 6a of joint back sheet 32 and crotch sheet 6, preferably formed continuously in its total length.Thus, under the wearing effect of diaper 1, even if when the health of wearer and crotch sheet 6 phase mutual friction, this crotch sheet 6 is also difficult to peel off from back sheet 32.

Get back to Fig. 2, veutro exterior body 2A is in the expansion of diaper 1 and elongation state forms the rectangle of growing crosswise under (with reference to Fig. 2), has pair of right and left side edge part 2a, 2a along the Y direction and the edge of pair of end up and down 2c, 2d (edge, upside 2c, edge, lower side 2d) along the X direction.Dorsal part exterior body 2B too, in the expansion of diaper 1 and elongation state forms the rectangle of growing crosswise under (with reference to Fig. 2), there is pair of right and left side edge part 2b, 2b along the Y direction and the edge of pair of end up and down 2c, 2d (edge, upside 2c, edge, lower side 2d) along the X direction.As shown in Figure 2, veutro exterior body 2A and the length of dorsal part exterior body 2B on length direction Y are uniform at width X.But any one length at length direction Y in veutro exterior body 2A and dorsal part exterior body 2B, can be longer than another exterior body in the local of this exterior body.Such as, dorsal part exterior body 2B can be enumerated extend to crotch C side on length direction Y than side seal portion 4,4 and cover the mode of buttocks.Generally speaking, veutro exterior body 2A and dorsal part exterior body 2B is discontinuous in crotch, and two exterior bodies are engaged by side seal portion 4,4, forms the externally mounted part 10 of ring-type.

And the side edge part 2a of veutro exterior body 2A and the side edge part 2b of dorsal part exterior body 2B is bonded into herringbone, thus as shown in Figure 1, form a pair side seal portion 4,4 at diaper 1.This joint such as uses the known joint methods such as heat sealing, high frequency involution, ultrasonic sealing function, bonding agent.Additionally by this joint, as shown in Figure 1, waist opening portion 5a and a pair leg opening part 5b is formed together with side seal portion 4,4.

As shown in Figure 2, the end side (part overlapping with veutro exterior body 2A) of length direction Y is fixed on the middle section of the width X of veutro exterior body 2A to absorbent main body 3 by bonding agent (not shown).Similarly, another side (part overlapping with dorsal part exterior body 2B) of length direction Y is fixed on the middle section of the width Y of dorsal part exterior body 2B by bonding agent (not shown).Aftermentioned with the detailed content of the detailed content of the joint of veutro exterior body 2A and the joint of absorbent main body 3 and dorsal part exterior body 2B about absorbent main body 3.

In the following description, mainly the formation of the veutro exterior body 2A of diaper 1 is described, but except as otherwise noted not so dorsal part exterior body 2B also there is same formation.Therefore, about dorsal part exterior body 2B, the aspect be not particularly described, is suitable for the explanation for veutro exterior body 2A.

As shown in Figure 2, the veutro exterior body 2A of diaper 1 has outer-skin sheet 22 and inner layer piece 23.Outer-skin sheet 22 forms the outmost surface of veutro exterior body 2A.Inner layer piece 23 configures adjacently in the inner side of outer-skin sheet 22 and this outer-skin sheet 22.At width X, outer-skin sheet 22 and inner layer piece 23 become identical shape.At length direction Y, outer-skin sheet 22 and inner layer piece 23 also form identical shape.

Between outer-skin sheet 22 and inner layer piece 23, be configured with multiple waist elastomeric elements 51 that are thread or with shape.Each waist elastomeric element 51 in the width direction X extends, and is fixed between outer-skin sheet 22 and inner layer piece 23 with elongation state.But position overlapping with absorbent main body 3 among veutro exterior body 2A does not configure elastomeric element 51, even if or configuration elastomeric element 51, be also configure under the state do not showed in the elasticity of this elastomeric element 51.Under the wearing effect of diaper 1, due to the contraction of waist elastomeric element 51, produce a large amount of pleat or concavo-convex and form fold (with reference to Fig. 1) in outer-skin sheet 22.But the position overlapping with absorbent main body 3 does not form fold among veutro exterior body 2A.

As shown in Figure 5, the middle section of its length direction of absorbent main body 3 Y forms the crotch C of diaper 1, and the region extended to the front and back of length direction Y from this crotch C is stacked with veutro exterior body 2A and dorsal part exterior body 2B and engage.Absorbent main body 3 is stacked with these exterior bodies 2A, 2B and engage in the flesh opposite face side of veutro exterior body 2A and dorsal part exterior body 2B.The joint of veutro exterior body 2A and absorbent main body 3 is extend at X in the width direction many veutro junction surface 21a that length direction Y exists interval to carry out as shown in Figure 7.On the other hand, the joint of dorsal part exterior body 2B and absorbent main body 3 is also extend at X in the width direction many dorsal part junction surface 21b that length direction Y exists interval to carry out.By veutro exterior body 2A and dorsal part exterior body 2B being engaged with absorbent main body 3 according to such pattern, the flexibility of diaper 1 and aeration can not be damaged both are engaged.

Veutro junction surface 21a and dorsal part junction surface 21b is such as formed by adhesive-applying.Veutro junction surface 21a and dorsal part junction surface 21b is formed as the striated with Rack.But the formation pattern of veutro junction surface 21a and dorsal part junction surface 21b is not limited thereto, also can be formed by other pattern, as long as become muscle shape along width X-shaped.Such as, the bond pattern of spiral helicine bond pattern, Ω shape can also be adopted.Veutro junction surface 21a and dorsal part junction surface 21b, throughout the width X of absorbent main body 3, is formed continuously or discontinuously.Between veutro junction surface 21a adjacent on length direction Y and between the 21b of dorsal part junction surface, absorbent main body 3 and veutro exterior body 2A and dorsal part exterior body 2B are disengaged condition.

As shown in Figure 7, the outermost veutro junction surface 21a ' being positioned at length direction X among the veutro junction surface 21a engaging veutro exterior body 2A and absorbent main body 3 is preferably formed over the entire length thereof continuously.In addition, the veutro junction surface 21a of the inner side of length direction X is positioned at " also preferably formed continuously over the entire length thereof.Thus, the joint of veutro exterior body 2A and absorbent main body 3 is reliable, even if under the wearing effect of diaper 1 when the health of wearer and veutro exterior body 2A or absorbent main body 3 phase mutual friction, veutro exterior body 2A is also difficult to peel off from absorbent main body 3.

According to reason similar to the above, as shown in Figure 7, be positioned among the dorsal part junction surface 21b engaging dorsal part exterior body 2B and absorbent main body 3 length direction X outermost dorsal part junction surface 21b ' and be positioned at length direction X inside dorsal part junction surface 21b " preferably formed continuously over the entire length thereof.

In fig. 8, the engaging zones of veutro exterior body 2A and absorbent main body 3 symbol KS _frepresent.In addition, in the figure, the engaging zones of dorsal part exterior body 2B and absorbent main body 3 symbol KS _brepresent.In this figure, engaging zones KS _fwith engaging zones KS _ball represent with the hacures had a down dip to the right.In addition, in this figure, crotch sheet 6 represents with symbol M S with the engaging zones of absorbent main body 3.In this figure, the engaging zones MS hacures tilted to left down represent.As known in the figure, there is engaging zones KS at veutro portion A _fwith the region of engaging zones MS overlap, the region that the hacures namely had a down dip to the right and the hacures tilted to left down intersect.This region is called overlapping region, uses symbol SG _frepresent.On the other hand, also there is engaging zones KS at drosal part B _bwith the region of engaging zones MS overlap, the region that the hacures namely had a down dip to the right and the hacures tilted to left down intersect.This region is called overlapping region, uses symbol SG _brepresent.

In the present embodiment, at veutro portion A, overlapping region SG _fthe length of length direction Y be engaging zones KS _flength direction Y length less than 50%, preferably less than 45%, more preferably less than 35%.The lower limit of this value is preferably more than 5%, is more preferably more than 10%, and further preferably more than 15%.Such as, overlapping region SG _fthe length of length direction Y be preferably engaging zones KS _flength direction Y length less than more than 5% 50%, be more preferably less than more than 10% 45%, more preferably less than more than 15% 35%.On the other hand, at drosal part B, overlapping region SG _bthe length of length direction Y be engaging zones KS _blength direction Y length less than 50%, be preferably less than 45%, be more preferably less than 35%.The lower limit of this value is preferably more than 5%, is more preferably more than 10%, and more preferably more than 15%.Such as, overlapping region SG _bthe length of length direction Y be preferably engaging zones KS _blength direction Y length less than more than 5% 50%, be more preferably less than more than 10% 45%, further preferably less than more than 15% 35%.In the present embodiment, by overlapping region SG _f, SG _bthe length of length direction Y relative to engaging zones KS _f, KS _bthe length setting of length direction Y be above-mentioned scope, flexibility and the aeration of diaper 1 can not be damaged thus, effectively to prevent under the wearing effect of diaper 1 each exterior body 2A, 2B by mistake from the situation that absorbent main body 3 is peeled off.

The viewpoint peeled off from absorbent main body 3 from more effectively preventing exterior body 2A, 2B when not damaging flexibility and the aeration of diaper 1, by overlapping region SG _fthe length setting of length direction be relative to from by diaper 1 before and after length direction binary position M to the length MS of the end 6 ' of the crotch sheet 6 of 2A side, veutro portion _fbe less than 50%, be preferably set to less than 35%, be more preferably set as less than 25%.The lower limit of this value is preferably more than 2%, is more preferably more than 5%, and more preferably more than 10%.In addition, by overlapping region SG _bthe length setting of length direction be end 6 relative to the crotch sheet 6 of side from position M to drosal part 2B " length MS _bbe less than 50%, be preferably set to less than 35%, be more preferably set as less than 25%.The lower limit of this value is preferably more than 2%, is more preferably more than 5%, and more preferably more than 10%.Such as, overlapping region SG _fthe length of length direction relative to length MS _fbe preferably less than more than 2% 50%, be more preferably less than more than 5% 35%, more preferably less than more than 10% 25%.In addition, overlapping region SG _bthe length of length direction relative to length MS _bbe preferably less than more than 2% 50%, be more preferably less than more than 5% 35%, more preferably less than more than 10% 25%.

About above-mentioned overlapping region SG _f, SG _b, at veutro portion A, preferred overlapping region SG _fthe distortion guidance field 33c of the absorbent cores 33 before described is not overlapping at the thickness direction of diaper 1.Similarly, at drosal part B, also preferred overlapping region SG _bnot overlapping at the thickness direction of diaper 1 with the distortion guidance field 33c of absorbent cores 33.By such design, can effectively prevent because because of the stacked of multiple in overlapping region, rigidity uprises or because of bonding and rigidity uprises the situation of the preferred distortion of caused obstruction absorber, and the reduction of the buttocks spreadability of the exterior body that can effectively prevent the distortion of absorbent cores 33 from causing.

In addition, about the engaging zones KS of above-mentioned veutro portion A _fwith the engaging zones KS of drosal part B _b, these engaging zones KS _f, KS _bthe length direction bond strength of per unit area higher than the width bond strength of the per unit area of above-mentioned engaging zones MS, in addition, engaging zones KS _f, KS _bthe width bond strength of the per unit area situation higher than the length direction bond strength of the per unit area of engaging zones MS, from the engaging zones KS effectively prevented when using _f, KS _bstripping, the viewpoint simultaneously improving flexibility, skin sense of touch and aeration is preferred.When regulating the magnitude relationship of bond strength like this, as long as such as control the grammes per square metre of the bonding agent of coating, or the area of the bonding agent of control coating.

Engaging zones KS _f, KS _bthe assay method of length direction bond strength of per unit area as follows.

(1) from the engaging zones KS veutro portion A _ftake the method for sample strip

The width of sample strip is from engaging zones KS _fplay the region along the width 50mm in the central area in the diaper width direction (X-direction) of the bottom, crotch side of veutro exterior body 2A.The length direction of sample strip is go in the region of diaper length direction (Y-direction) upper 50mm length towards the waist end side of veutro exterior body from the position at the two ends of 50mm width.Positive dough sheet, absorbent cores and the chip part after the three-dimensional non-woven fabric of edge-on of skin is eliminated at engaging zones KS among exterior body and absorbent main body _funder engaged state, cut out the region of this 50mm × 50mm.

(2) from the engaging zones KS drosal part B _btake the method for sample strip

The width of sample strip is from engaging zones KS _bplay the region along the width 50mm in the middle section in the diaper width direction (X-direction) of the bottom, crotch side of dorsal part exterior body 2B.The length direction of sample strip is go in the region of diaper length direction (Y-direction) upper 50mm length towards the waist end side of dorsal part exterior body from the position at the two ends of 50mm width.Positive dough sheet, absorbent cores and the chip part after the three-dimensional non-woven fabric of edge-on of skin is eliminated at engaging zones KS among exterior body and absorbent main body _bunder engaged state, cut out the region of this 50mm × 50mm.

(3) mensuration of the length direction bond strength of sample strip

By each sample sheet obtained between the chuck being held in universal tensile testing machine (ORIENTEC Inc., trade name " RTA-100 ") (chuck spacing 15mm), peel from the side being equivalent to crotch portion side to make it.Now, using the part of 10mm on length direction as the grip portion be held on chuck, when there is bonding part in this region, peel off in advance.Then, sample strip is stretched with draw speed 300mm/min, to make to peel towards the waist end side of diaper, try to achieve engaging zones KS _f, KS _bintegration load (N) when whole stripping is complete.Then, with measure sample strip in area (50mm × 40mm) except integration load (N).Using the value of gained as engaging zones KS _f, KS _bthe length direction bond strength of per unit area.

On the other hand, engaging zones KS _f, KS _bthe width bond strength of per unit area, in the mensuration of length direction bond strength, the draw direction 90-degree rotation of working sample is measured.

The assay method of the width bond strength of the per unit area of engaging zones MS is as follows.

The width of sample strip be set as crotch sheet 6 along end, diaper width direction, the region of 50mm in the middle section of diaper width direction (X-direction).The length direction of sample strip is set as the region going the length of 50mm from the position at the two ends of 50mm width towards diaper length direction (Y-direction).Crotch sheet 6 with eliminate state that positive dough sheet, absorbent cores and the chip part in the three-dimensional non-woven fabric of edge-on of skin engage at engaging zones MS in absorbent main body under, cut out the region of this 50mm × 50mm.

By the sample strip obtained between the chuck being held in universal tensile testing machine (ORIENTEC Inc., trade name " RTA-100 ") (chuck spacing 15mm), so that its width end side from crotch sheet 6 is peeled.Now, using the part of 10mm on length direction as the grip portion be held on chuck, when there is bonding part in this region, peel off in advance.Then, with draw speed 300mm/min drawn samples sheet, to make to peel towards the width central side of diaper, the integration load (N) when engaging zones MS has all peeled off is tried to achieve.Then, with the area (50mm × 40mm) of sample strip measured except integration load (N).Using the width bond strength of the value of gained as the per unit area of engaging zones MS.

On the other hand, the length direction bond strength of the per unit area of engaging zones MS, in the mensuration of width bond strength, makes the draw direction 90-degree rotation of working sample measure.

Again get back to Fig. 2, the end of the 2A side, veutro portion of its length direction of absorbent main body 3 Y is covered by veutro portion end flaps 7a.In addition, the end of the drosal part 2B side of its length direction of absorbent main body 3 Y is covered by drosal part end flaps 7b.Veutro portion end flaps 7a and drosal part end flaps 7b is configured at the skin opposite face side of absorbent main body 3.Use both ends sheet 7a, 7b can not spill from the end of absorbent main body 3 as the short fiber oar of the constituent material of absorbent cores 33 or superabsorbent polymer to make.In order to this object, as both ends sheet 7a, 7b, such as, various non-woven fabrics can be used.

Veutro end flaps 7a and back end sheet 7b, at the position of extending from the periphery of absorbent main body 3, engages with veutro exterior body 2A and dorsal part exterior body 2B.Specifically, as shown in Figure 9, veutro end flaps 7a extends at X in the width direction many veutro engaged at end portion 71a that length direction Y exists interval and engages with veutro exterior body 2A and absorbent main body 3.On the other hand, back end sheet 7b extends at X in the width direction many back end junction surface 71b that length direction Y exists interval and engages with dorsal part exterior body 2B and absorbent main body 3.

71a, 71b are formed as the striated with Rack for each engaged at end portion.But the formation pattern of each engaged at end portion 71a, 71b is not limited thereto, and also can be formed by other pattern, as long as become muscle shape along width X-shaped.Such as can adopt the bond pattern of spiral helicine bond pattern, Ω shape.Each engaged at end portion 71a, 71b are formed in the whole region of width X of each end flaps 7a, 7b continuously or discontinuously.Length direction Y adjacent between engaged at end portion 71a, 71b, each end flaps 7a, 7b and each exterior body 2A, 2B and absorbent main body 3 are disengaged condition.

The region LS of veutro end flaps 7a and absorbent main body 3 overlap _fthe length of the length direction Y of (with reference to Fig. 9), relative to the engaging zones KS of above-mentioned, veutro exterior body 2A and absorbent main body 3 _fthe length of the length direction of (with reference to Fig. 8) is preferably less than 50%, and more preferably less than 45%, further preferably less than 35%.The lower limit of this value is preferably more than 5%, and more preferably more than 10%, further preferably less than 15%.Such as region LS _fthe length of length direction, relative to engaging zones KS _fthe length of length direction be preferably less than more than 5% 50%, more preferably less than more than 10% 45%, further preferably less than more than 15% 35%.By such design, pliability and the aeration of veutro portion A can be improved.

On the other hand, about drosal part B, the region LS of back end sheet 7b and absorbent main body 3 overlap _bthe length of the length direction Y of (with reference to Fig. 9), relative to the engaging zones KS of above-mentioned, dorsal part exterior body 2B and absorbent main body 3 _bthe length of the length direction of (with reference to Fig. 8) is preferably less than 50%, and more preferably less than 45%, further preferably less than 35%.The lower limit of this value preferably more than 5%, more preferably more than 10%, further preferably more than 15%.Such as, region LS _bthe length of length direction, relative to engaging zones KS _bthe length of length direction be preferably less than more than 5% 50%, more preferably less than more than 10% 45%, further preferably less than more than 15% 35%.By such design, flexibility and the aeration of drosal part B can be improved.

In the diaper 1 of present embodiment, when the thickness direction along diaper 1 is observed, the crotch sheet 6 of veutro end flaps 7a and back end sheet 7b not with described is before overlapping.Like this, the reduction this point of the aeration from the thickness direction suppressing diaper 1 is favourable.

The material forming veutro end flaps 7a and back end sheet 7b is not particularly limited, as described above, when veutro exterior body 2A and dorsal part exterior body 2B be outer-skin sheet 22 and inner layer piece 23 two-layer structure, veutro end flaps 7a and back end sheet 7b are preferably identical material with outer-skin sheet 22.This makes sense of touch outside diaper even, to have nothing to do and the skin sense of touch this point that obtains the one as underwear is favourable from split with exterior body and absorbent main body.

Figure 10 represents the X-X line profile in Fig. 2.As shown in the drawing, veutro end flaps 7a extends laterally from the end of the length direction Y of absorbent main body 3, extends part 7a ' and engages with veutro exterior body 2A.Extend being bonded on of part 7a ' and veutro exterior body 2A to extend junction surface, region 8 and carry out.The joint extended in junction surface, region 8 such as can be undertaken by bonding agent.In this situation, bonding agent also can be coated on the face relative with veutro exterior body 2A that extend in part 7a ', or also can be coated on the face relative with extending part 7a ' in veutro exterior body 2A.In addition, also part 7a ' and veutro exterior body 2A both sides coating can extended.When extending part 7a ' and veutro exterior body 2A both sides' adhesive-applying, being coated on the bonding agent extending part 7a ' and the bonding agent being coated on veutro exterior body 2A, can overlapping each other under both engagement states, or also can be in staggered configuration.In addition, Figure 10 is the figure of the cross-sectional configuration representing veutro portion A, and the cross-sectional configuration of drosal part B is identical with Figure 10.

Extend junction surface, region 8 shown in Figure 10, extend at the width (direction orthogonal with paper) of diaper 1, and there is interval at length direction Y.But, this also can be replaced to extend junction surface, region 8, such as seamlessly adhesive-applying on the face relative with extending part 7a ' of veutro exterior body 2A.Alternatively, the mode shown in Figure 11 can also be adopted.In fig. 11, at the region LS that veutro end flaps 7a is overlapping with absorbent main body 3 _fin, be seamlessly coated with bonding agent continuously at the region 72a of the Rack extended laterally from the periphery of absorbent main body 3, veutro end flaps 7a and absorbent main body 3 are engaged by this bonding agent.In Figure 11, the 72a hacures tilted to left down in region represent.In the outside of region 72a, extend at X in the width direction many veutro engaged at end portion 71a that length direction Y exists interval, veutro end flaps 7a and veutro exterior body 2A engages.Similarly, at the region LS that back end sheet 7b is overlapping with absorbent main body 3 _b, be coated with bonding agent the region 72b of the Rack extended laterally from the periphery of absorbent main body 3 is gapless continuously, veutro end flaps 7b and absorbent main body 3 are engaged by this bonding agent.In Figure 11, the 72b hacures tilted to left down in region represent.In the outside of region 72b, extend at X in the width direction many veutro engaged at end portion 71b that length direction Y exists interval, back end sheet 7b and dorsal part exterior body 2B engages.In the mode shown in Figure 11, can at the region seamlessly adhesive-applying of the veutro end flaps 7a corresponding with region 72a, 72b and back end sheet 7b.On the other hand, can than region 72a, 72b region in the outer part among veutro exterior body 2A and dorsal part exterior body 2B, X extends in length direction Y and there is compartment of terrain adhesive-applying in the width direction.

In addition, carrying out describing, the size at each position so far illustrated for the purpose of prudent, is each elastomeric element is extended and size (design size) under the state of being elongated by each parts.

Preferred embodiment be illustrated the present invention is based on it above, but the present invention is not limited by described embodiment.Such as, described embodiment is the example applying the present invention to Breeches type disposable diaper, and pants type absorptive article of the present invention equally also can be applied to the absorbent commodity beyond it, such as pants type sanitary napkin etc.

About above-mentioned embodiment, the invention also discloses following pants type absorptive article.

< 1 > pants type absorptive article, it comprises: the veutro exterior body being configured in the veutro of wearer; Be configured in the dorsal part exterior body of the dorsal part of wearer; The absorbent main body on these exterior bodies is fixed in the mode be set up between this veutro exterior body and this dorsal part exterior body; With the crotch sheet of outer surface side being configured at this absorbent main body, there is in the edge, both sides of the longitudinal direction along this veutro exterior body and this dorsal part exterior body the side seal portion that this veutro exterior body and this dorsal part exterior body are engaged and formed, above-mentioned pants type absorptive article has the ring-type externally mounted part formed therefrom

Described article have the length direction in the direction extended along absorbent main body and width orthogonal with it,

Absorbent main body have be positioned at and side that the skin of wearer is nearer positive dough sheet, be positioned at and the back sheet of side that the skin of wearer is far away and the absorbent cores that is positioned between two panels,

Absorbent cores has one or more distortion guidance field alongst,

The joint of veutro exterior body and absorbent main body, carries out at many veutro junction surfaces extending in length direction in the width direction and exist interval,

The joint of dorsal part exterior body and absorbent main body, carries out at many dorsal part junction surfaces extending in length direction in the width direction and exist interval,

The joint of crotch sheet and back sheet, carries out at many crotch junction surfaces extending in width along its length and exist interval,

The engaging zones KS of veutro exterior body and absorbent main body _fthe region SG overlapping with the engaging zones MS of absorbent main body with crotch sheet _fthe length of length direction, be engaging zones KS _flength direction length less than 50%,

Pants type absorptive article described in < 2 > above-mentioned < 1 >, wherein, in veutro portion, overlapping region SG _fthe length of length direction be preferably engaging zones KS _flength direction length less than 45%, more preferably less than 35%, be preferably more than 5%, be more preferably more than 10%, more preferably more than 15%,

Overlapping region SG _fthe length of length direction be preferably engaging zones KS _flength direction length less than more than 5% 50%, more preferably less than more than 10% 45%, further preferably less than more than 15% 35%.

Pants type absorptive article described in the above-mentioned < 1 of < 3 > > or < 2 >, wherein, at drosal part, overlapping region SG _bthe length of length direction be preferably engaging zones KS _blength direction Y length less than 45%, more preferably less than 35%, be preferably more than 5%, be more preferably more than 10%, more preferably more than 15%,

Overlapping region SG _bthe length of length direction be preferably engaging zones KS _blength direction length less than more than 5% 50%, be more preferably less than more than 10% 45%, more preferably less than more than 15% 35%.

Pants type absorptive article according to any one of < 4 > above-mentioned < 1 > ~ < 3 >, wherein, the engaging zones KS of veutro exterior body and absorbent main body _fthe region SG overlapping with the engaging zones MS of absorbent main body with crotch sheet _fthe length of length direction, relative to from by described article binary position length MS to the end of the crotch sheet of abdomen lateral side before and after length direction _fbe less than 50%,

The engaging zones KS of dorsal part exterior body and absorbent main body _bthe region SG overlapping with the engaging zones MS of absorbent main body with crotch sheet _bthe length of length direction, relative to from by described article binary position length MS to the end of the crotch sheet of drosal part side before and after length direction _bbe less than 50%.

Pants type absorptive article according to any one of < 5 > above-mentioned < 1 > ~ < 4 >, wherein, overlapping region SG _fthe length of length direction relative to from by pants type absorptive article binary position M length MS to the end of the crotch sheet of abdomen lateral side before and after length direction _fbe preferably less than 35%, be more preferably less than 25%, be preferably more than 2%, be more preferably more than 5%, more preferably more than 10%,

Overlapping region SG _fthe length of length direction relative to length MS _fbe preferably less than more than 2% 50%, be more preferably less than more than 5% 35%, more preferably less than more than 10% 25%.

Pants type absorptive article according to any one of < 6 > above-mentioned < 1 > ~ < 5 >, wherein, overlapping region SG _bthe length of length direction relative to from by pants type absorptive article binary position M length MS to the end of the crotch sheet of drosal part side before and after length direction _bbe preferably less than 35%, be more preferably less than 25%, be preferably more than 2%, be more preferably more than 5%, more preferably more than 10%,

Overlapping region SG _bthe length of length direction relative to length MS _bbe preferably less than more than 2% 50%, be more preferably less than more than 5% 35%, more preferably less than more than 10% 25%.

Pants type absorptive article according to any one of < 7 > above-mentioned < 1 > ~ < 6 >, wherein, cover the end of abdomen lateral side of absorbent main body and the veutro end flaps of the end of drosal part side and back end sheet, be configured at the skin opposite face side of this absorbent main body

Veutro end flaps and back end sheet engage with veutro exterior body and dorsal part exterior body at the position of extending from the periphery of absorbent main body.

Pants type absorptive article according to any one of < 8 > above-mentioned < 1 > ~ < 7 >, wherein, many the veutro engaged at end portions that veutro end flaps is extending in length direction and exist interval in the width direction engage with veutro exterior body and absorbent main body

Many the back end junction surfaces that back end sheet is extending in length direction and exist interval in the width direction engage with dorsal part exterior body and absorbent main body.

Pants type absorptive article according to any one of < 9 > above-mentioned < 1 > ~ < 8 >, wherein, the region LS that veutro end flaps is overlapping with absorbent main body _fthe length of length direction relative to the engaging zones KS of veutro exterior body and absorbent main body _fthe length of length direction be less than 50%,

The region LS that back end sheet is overlapping with absorbent main body _bthe length of length direction relative to the engaging zones KS of dorsal part exterior body and absorbent main body _bthe length of length direction be less than 50%.

Pants type absorptive article according to any one of < 10 > above-mentioned < 1 > ~ < 9 >, wherein, veutro end flaps and back end sheet not overlapping with crotch sheet.

Pants type absorptive article according to any one of < 11 > above-mentioned < 1 > ~ < 10 >, wherein, veutro exterior body has outer-skin sheet and is configured in the inner layer piece of inner side of this outer-skin sheet, this outer-skin sheet and veutro end flaps are the sheet of identical material

Dorsal part exterior body has outer-skin sheet and is configured in the inner layer piece of inner side of this outer-skin sheet, and this outer-skin sheet and back end sheet are the sheet of identical material.

Pants type absorptive article according to any one of < 12 > above-mentioned < 1 > ~ < 11 >, wherein, at the region LS that veutro end flaps is overlapping with absorbent main body _f, be seamlessly coated with bonding agent continuously in the region of the Rack extended laterally from the periphery of absorbent main body, veutro end flaps and absorbent main body are engaged by this bonding agent,

At the region LS that back end sheet is overlapping with absorbent main body _b, be seamlessly coated with bonding agent continuously in the region of the Rack extended laterally from the periphery of absorbent main body, back end sheet and absorbent main body are engaged by this bonding agent.

Pants type absorptive article according to any one of < 13 > above-mentioned < 1 > ~ < 12 >, wherein, absorbent main body have from the left and right sides edge of absorbent cores or near it towards the first three-dimensional fold that the central side of width erects.

Pants type absorptive article according to any one of < 14 > above-mentioned < 1 > ~ < 13 >, wherein, crotch sheet is configured at least crotch of absorbent main body at length direction, and crosses crotch and extend to veutro portion A and drosal part B.

Pants type absorptive article according to any one of < 15 > above-mentioned < 1 > ~ < 14 >, wherein, absorbent main body has from the left and right sides edge of absorbent cores or the first three-dimensional fold erected towards width central side near it with from the left and right sides edge of absorbent cores or the second three-dimensional fold of erecting outside width near it

Distance between the free end of the width of crotch sheet and second of left and right the three-dimensional fold is identical or narrower than it.

Pants type absorptive article according to any one of < 16 > above-mentioned < 1 > ~ < 15 >, wherein, the width of crotch sheet and the width of absorbent cores roughly the same.

Pants type absorptive article according to any one of < 17 > above-mentioned < 1 > ~ < 16 >, wherein, absorbent main body has from the left and right sides edge of absorbent cores or the first three-dimensional fold erected towards width central side near it with from the left and right sides edge of absorbent cores or the second three-dimensional fold of erecting outside width near it

The base end part of the first three-dimensional fold and the second three-dimensional fold is positioned at identical position.

Pants type absorptive article described in < 18 > above-mentioned < 17 >, wherein, base end part extends at length direction.

Pants type absorptive article according to any one of < 19 > above-mentioned < 1 > ~ < 18 >, wherein, absorbent main body has from the left and right sides edge of absorbent cores or the first three-dimensional fold erected towards width central side near it with from the left and right sides edge of absorbent cores or the second three-dimensional fold of erecting outside width near it

First three-dimensional fold and the second three-dimensional fold shape are formed at least crotch of absorbent main body, and cross crotch and extend to veutro portion and drosal part.

Pants type absorptive article according to any one of < 20 > above-mentioned < 1 > ~ < 19 >, wherein, absorbent main body have from the left and right sides edge of absorbent cores or near it towards the first three-dimensional fold that width central side erects

First three-dimensional fold has and is positioned at its free end and the thread elastomeric element near it,

Thread elastomeric element extends at length direction,

Thread elastomeric element is fixed on fold formation sheet with elongation state.

Pants type absorptive article according to any one of < 21 > above-mentioned < 1 > ~ < 20 >, wherein, absorbent main body has from the left and right sides edge of absorbent cores or the second three-dimensional fold of erecting outside width near it

Second three-dimensional fold has and is positioned at its free end and the thread elastomeric element near it,

Thread elastomeric element extends at length direction,

Pants type absorptive article according to any one of < 22 > above-mentioned < 1 > ~ < 21 >, wherein, absorbent main body has from the left and right sides edge of absorbent cores or the first three-dimensional fold erected towards width central side near it with from the left and right sides edge of absorbent cores or the second three-dimensional fold of erecting outside width near it

First three-dimensional fold and the second three-dimensional fold are formed by a fold and are formed with sheet.

Pants type absorptive article according to any one of < 23 > above-mentioned < 1 > ~ < 22 >, wherein, at least crotch that guidance field is formed at absorbent main body is out of shape.

Pants type absorptive article according to any one of < 24 > above-mentioned < 1 > ~ < 23 >, wherein, be out of shape the crotch of crossing absorbent main body in guidance field and extend to veutro portion and drosal part.

According to any one of < 25 > above-mentioned < 1 > ~ < 24 > pants type absorptive article, wherein, many crotch junction surfaces that absorbent main body and crotch sheet to extend in width and exist interval along its length engage.

Pants type absorptive article described in < 26 > above-mentioned < 25 >, wherein, crotch junction surface is formed as the striated with Rack.

Pants type absorptive article described in the above-mentioned < 25 of < 27 > > or < 26 >, wherein, crotch junction surface is formed in the whole region of length direction of crotch sheet continuously or discontinuously.

Pants type absorptive article according to any one of < 28 > above-mentioned < 25 > ~ < 27 >, wherein, back sheet and crotch sheet are disengaged condition between the crotch junction surface that width is adjacent.

Pants type absorptive article according to any one of < 29 > above-mentioned < 25 > ~ < 28 >, wherein, be positioned at the outermost crotch junction surface of width among crotch junction surface to be formed continuously over the entire length thereof.

Pants type absorptive article according to any one of < 30 > above-mentioned < 1 > ~ < 29 >, wherein, the engaging zones KS of veutro exterior body and absorbent main body _fthe region SG overlapping with the engaging zones MS of absorbent main body with crotch sheet _f, it is not overlapping with the distortion guidance field of absorbent cores,

The engaging zones KS of dorsal part exterior body and absorbent main body _bthe region SG overlapping with the engaging zones MS of absorbent main body with crotch sheet _b, not overlapping with the distortion guidance field of absorbent cores.

Pants type absorptive article according to any one of < 31 > above-mentioned < 1 > ~ < 30 >, wherein, veutro exterior body is rectangular lamellar, and dorsal part exterior body is rectangular lamellar.

Pants type absorptive article according to any one of < 32 > above-mentioned < 1 > ~ < 30 >, wherein, absorbent main body is formed as in the longer rectangle of length direction.

Pants type absorptive article according to any one of < 33 > above-mentioned < 1 > ~ < 32 >, wherein, by the mixed product covering hydrophilic fibre and superabsorbent polymer with hydrophilic clad sheet is slim, material that is that formed is formed absorbent cores.

Pants type absorptive article according to any one of < 34 > above-mentioned < 1 > ~ < 33 >, wherein, the length of the length direction of veutro exterior body and dorsal part exterior body is impartial at width.

Pants type absorptive article according to any one of < 35 > above-mentioned < 1 > ~ < 34 >, wherein, in veutro exterior body and dorsal part exterior body, the longitudinal length of any one is longer than another exterior body in the local of this exterior body.

Pants type absorptive article according to any one of < 36 > above-mentioned < 1 > ~ < 35 >, wherein, dorsal part exterior body more extends to crotch side at length direction than side seal portion.

Pants type absorptive article according to any one of < 37 > above-mentioned < 1 > ~ < 36 >, wherein, veutro exterior body and dorsal part exterior body are engaged by side seal portion, form the externally mounted part of ring-type.

Pants type absorptive article according to any one of < 38 > above-mentioned < 1 > ~ < 36 >, wherein, between the veutro junction surface that length direction is adjacent and between dorsal part junction surface, absorbent main body and veutro exterior body and dorsal part exterior body are disengaged condition.

Pants type absorptive article according to any one of < 39 > above-mentioned < 1 > ~ < 38 >, wherein, the outermost veutro junction surface being positioned at length direction is formed over the entire length thereof continuously.

Pants type absorptive article according to any one of < 40 > above-mentioned < 1 > ~ < 39 >, wherein, the veutro junction surface being positioned at the inner side of length direction is formed over the entire length thereof continuously.

Pants type absorptive article according to any one of < 41 > above-mentioned < 1 > ~ < 40 >, wherein, the dorsal part junction surface of the outermost dorsal part junction surface being positioned at length direction and the inner side being positioned at length direction is formed continuously in respective total length.

Pants type absorptive article according to any one of < 42 > above-mentioned < 1 > ~ < 41 >, wherein, engaging zones KS _fthe length direction bond strength of per unit area higher than the width bond strength of the per unit area of engaging zones MS.

Pants type absorptive article according to any one of < 43 > above-mentioned < 1 > ~ < 42 >, wherein, engaging zones KS _bthe length direction bond strength of per unit area higher than the width bond strength of the per unit area of engaging zones MS.

Pants type absorptive article according to any one of < 44 > above-mentioned < 1 > ~ < 43 >, wherein, engaging zones KS _fthe width bond strength of per unit area higher than the length direction bond strength of the per unit area of engaging zones MS.

Pants type absorptive article according to any one of < 45 > above-mentioned < 1 > ~ < 44 >, wherein, engaging zones KS _bthe width bond strength of per unit area higher than the length direction bond strength of the per unit area of engaging zones MS.

Pants type absorptive article according to any one of < 46 > above-mentioned < 1 > ~ < 45 > is Breeches type disposable diaper.

Industrial utilizability

According to the present invention, when not damaging flexibility and the aeration of absorbent commodity, can effectively prevent exterior body from peeling off from absorbent main body.

Claims

1. a pants type absorptive article, it comprises: the veutro exterior body being configured in the veutro of wearer; Be configured in the dorsal part exterior body of the dorsal part of wearer; The absorbent main body on these exterior bodies is fixed in the mode be set up between this veutro exterior body and this dorsal part exterior body; With the crotch sheet of outer surface side being configured at this absorbent main body, in the edge, both sides along the longitudinal of this veutro exterior body and this dorsal part exterior body, there is the side seal portion that this veutro exterior body and this dorsal part exterior body are engaged and formed, described pants type absorptive article has the ring-type externally mounted part formed therefrom, and the feature of this pants type absorptive article is:

Absorbent cores has one or more distortion guidance field alongst,

The joint of veutro exterior body and absorbent main body is extending in the width direction and carrying out at many veutro junction surfaces that length direction exists interval,

The joint of dorsal part exterior body and absorbent main body is extending in the width direction and carrying out at many dorsal part junction surfaces that length direction exists interval,

The joint of crotch sheet and back sheet, to extend along its length and to carry out at many crotch junction surfaces that width exists interval,

2. pants type absorptive article as claimed in claim 1, is characterized in that:

In veutro portion, overlapping region SG _fthe length of length direction be engaging zones KS _flength direction length less than more than 5% 50%.

3. pants type absorptive article as claimed in claim 1 or 2, is characterized in that:

At drosal part, overlapping region SG _bthe length of length direction be engaging zones KS _blength direction length less than more than 5% 50%.

4. the pants type absorptive article according to any one of claims 1 to 3, is characterized in that:

The engaging zones KS of veutro exterior body and absorbent main body _fthe region SG overlapping with the engaging zones MS of absorbent main body with crotch sheet _fthe length of length direction, relative to from by described article binary position length MS to the end of the crotch sheet of abdomen lateral side before and after length direction _fbe less than 50%,

The engaging zones K of dorsal part exterior body and absorbent main body _sBthe region SG overlapping with the engaging zones MS of absorbent main body with crotch sheet _bthe length of length direction, relative to from by described article binary position length MS to the end of the crotch sheet of drosal part side before and after length direction _bbe less than 50%.

5. the pants type absorptive article according to any one of Claims 1 to 4, is characterized in that:

Overlapping region SG _fthe length of length direction relative to from by pants type absorptive article binary position M length MS to the end of the crotch sheet of abdomen lateral side before and after length direction _fbe less than more than 2% 50%.

6. the pants type absorptive article according to any one of Claims 1 to 5, is characterized in that:

Overlapping region SG _bthe length of length direction relative to from by pants type absorptive article binary position M length MS to the end of the crotch sheet of drosal part side before and after length direction _bbe less than more than 2% 50%.

7. the pants type absorptive article according to any one of claim 1 ~ 6, is characterized in that:

Cover the end of abdomen lateral side of absorbent main body and the veutro end flaps of the end of drosal part side and back end sheet, be configured at the skin opposite face side of this absorbent main body,

8. pants type absorptive article as claimed in claim 7, is characterized in that:

Veutro end flaps is extending in the width direction and is engaging with veutro exterior body and absorbent main body in many veutro engaged at end portions that length direction exists interval,

Back end sheet is extending in the width direction and is engaging with dorsal part exterior body and absorbent main body at many back end junction surfaces that length direction exists interval.

9. pants type absorptive article as claimed in claim 7 or 8, is characterized in that:

The region LS that veutro end flaps is overlapping with absorbent main body _fthe length of length direction, relative to the engaging zones KS of veutro exterior body and absorbent main body _fthe length of length direction be less than 50%,

The region LS that back end sheet is overlapping with absorbent main body _bthe length of length direction, relative to the engaging zones KS of dorsal part exterior body and absorbent main body _bthe length of length direction be less than 50%.

10. the pants type absorptive article according to any one of claim 7 ~ 9, is characterized in that:

Veutro end flaps and back end sheet not overlapping with crotch sheet.

11. pants type absorptive articles according to any one of claim 7 ~ 10, is characterized in that:

Veutro exterior body has outer-skin sheet and is configured at the inner layer piece of inner side of this outer-skin sheet, and this outer-skin sheet and veutro end flaps are the sheet of identical material,

Dorsal part exterior body has outer-skin sheet and is configured at the inner layer piece of inner side of this outer-skin sheet, and this outer-skin sheet and back end sheet are the sheet of identical material.

12. pants type absorptive articles according to any one of claim 7 ~ 11, is characterized in that:

At the region LS that veutro end flaps is overlapping with absorbent main body _f, be seamlessly coated with bonding agent continuously in the region of the Rack extended laterally from the periphery of absorbent main body, veutro end flaps and absorbent main body are engaged by this bonding agent,

13. pants type absorptive articles according to any one of claim 1 ~ 12, is characterized in that:

Absorbent main body have from the left and right sides edge of absorbent cores or near it towards the first three-dimensional fold that the central side of width erects.

14. pants type absorptive articles according to any one of claim 1 ~ 13, is characterized in that:

Crotch sheet is configured at least crotch of absorbent main body in the longitudinal direction, and crosses crotch and extend to veutro portion and drosal part.

15. pants type absorptive articles according to any one of claim 1 ~ 14, is characterized in that:

Absorbent main body has from the left and right sides edge of absorbent cores or the first three-dimensional fold erected towards width central side near it with from the left and right sides edge of absorbent cores or the second three-dimensional fold of erecting outside width near it,

16. pants type absorptive articles according to any one of claim 1 ~ 15, is characterized in that:

The width of crotch sheet is roughly the same with the width of absorbent cores.

17. pants type absorptive articles according to any one of claim 1 ~ 16, is characterized in that:

18. pants type absorptive articles as claimed in claim 17, is characterized in that:

Base end part extends at length direction.

19. pants type absorptive articles according to any one of claim 1 ~ 18, is characterized in that:

20. pants type absorptive articles according to any one of claim 1 ~ 19, is characterized in that:

Absorbent main body have from the left and right sides edge of absorbent cores or near it towards the first three-dimensional fold that width central side erects,

Thread elastomeric element extends at length direction,

21. pants type absorptive articles according to any one of claim 1 ~ 20, is characterized in that:

Absorbent main body has from the left and right sides edge of absorbent cores or the second three-dimensional fold of erecting outside width near it,

Thread elastomeric element extends at length direction,

22. pants type absorptive articles according to any one of claim 1 ~ 21, is characterized in that:

23. pants type absorptive articles according to any one of claim 1 ~ 22, is characterized in that:

Distortion guidance field is formed at least crotch of absorbent main body.

24. pants type absorptive articles according to any one of claim 1 ~ 23, is characterized in that:

The distortion guidance field crotch of crossing in absorbent main body extends to veutro portion and drosal part.

25. pants type absorptive articles according to any one of claim 1 ~ 24, is characterized in that:

Absorbent main body and crotch sheet to extend along its length and to engage at many crotch junction surfaces that width exists interval.

26. pants type absorptive articles as claimed in claim 25, is characterized in that:

Crotch junction surface is formed as the striated with Rack.

27. pants type absorptive articles as described in claim 25 or 26, is characterized in that:

Crotch junction surface is formed in the whole region of length direction of crotch sheet continuously or discontinuously.

28. pants type absorptive articles according to any one of claim 25 ~ 27, is characterized in that:

Back sheet and crotch sheet are disengaged condition between the crotch junction surface that width is adjacent.

29. pants type absorptive articles according to any one of claim 25 ~ 28, is characterized in that:

Be positioned at the outermost crotch junction surface of width among crotch junction surface, formed continuously over the entire length thereof.

30. pants type absorptive articles according to any one of claim 1 ~ 29, is characterized in that:

The engaging zones KS of veutro exterior body and absorbent main body _fthe region SG overlapping with the engaging zones MS of absorbent main body with crotch sheet _f, it is not overlapping with the distortion guidance field of absorbent cores,

31. pants type absorptive articles according to any one of claims 1 to 30, is characterized in that:

Veutro exterior body is rectangular lamellar, and dorsal part exterior body is rectangular lamellar.

32. pants type absorptive articles according to any one of claims 1 to 30, is characterized in that:

Absorbent main body is formed as rectangle longer on length direction.

33. pants type absorptive articles according to any one of claim of right1~32, is characterized in that:

By the mixed product covering hydrophilic fibre and superabsorbent polymer with hydrophilic clad sheet is slim, material that is that formed is formed absorbent cores.

34. pants type absorptive articles according to any one of claim of right1~33, is characterized in that:

The length of the length direction of veutro exterior body and dorsal part exterior body is impartial at width.

35. pants type absorptive articles according to any one of claims 1 to 34, is characterized in that:

In veutro exterior body and dorsal part exterior body, the longitudinal length of any one is longer than another exterior body in the local of this exterior body.

36. pants type absorptive articles according to any one of claims 1 to 35, is characterized in that:

Dorsal part exterior body more extends to crotch side at length direction than side seal portion.

37. pants type absorptive articles according to any one of claims 1 to 36, is characterized in that:

Veutro exterior body and dorsal part exterior body are engaged by side seal portion, form the externally mounted part of ring-type.

38. pants type absorptive articles according to any one of claims 1 to 36, is characterized in that:

Between the veutro junction surface that length direction is adjacent and between dorsal part junction surface, absorbent main body and veutro exterior body and dorsal part exterior body are disengaged condition.

39. pants type absorptive articles according to any one of claims 1 to 38, is characterized in that:

Be positioned at the outermost veutro junction surface of length direction to be formed continuously over the entire length thereof.

40. pants type absorptive articles according to any one of claims 1 to 39, is characterized in that:

The veutro junction surface being positioned at length direction inner side is formed over the entire length thereof continuously.

41. pants type absorptive articles according to any one of Claims 1 to 40, is characterized in that:

The dorsal part junction surface being positioned at the outermost dorsal part junction surface of length direction and being positioned at length direction inner side is formed continuously in respective total length.

42. pants type absorptive articles according to any one of Claims 1 to 41, is characterized in that:

Engaging zones KS _fthe length direction bond strength of per unit area higher than the width bond strength of the per unit area of engaging zones MS.

43. pants type absorptive articles according to any one of Claims 1 to 42, is characterized in that:

Engaging zones KS _bthe length direction bond strength of per unit area higher than the width bond strength of the per unit area of engaging zones MS.

44. pants type absorptive articles according to any one of Claims 1 to 43, is characterized in that:

Engaging zones KS _fthe width bond strength of per unit area higher than the length direction bond strength of the per unit area of engaging zones MS.

45. pants type absorptive articles according to any one of Claims 1 to 44, is characterized in that:

Engaging zones KS _bthe width bond strength of per unit area higher than the length direction bond strength of the per unit area of engaging zones MS.

46. pants type absorptive articles according to any one of Claims 1 to 45, is characterized in that:

Described pants type absorptive article is Breeches type disposable diaper.